package servlets.admin.config;

import dbProcs.Getter;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.owasp.encoder.Encode;
import utils.ScoreboardStatus;
import utils.ShepherdLogManager;
import utils.Validate;

/**
 * This is the control class for enabling the the user accessible scoreboard <br>
 * <br>
 * This file is part of the Security Shepherd Project.
 *
 * <p>The Security Shepherd project is free software: you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software Foundation, either
 * version 3 of the License, or (at your option) any later version.<br>
 *
 * <p>The Security Shepherd project is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 * PURPOSE. See the GNU General Public License for more details.<br>
 *
 * <p>You should have received a copy of the GNU General Public License along with the Security
 * Shepherd project. If not, see <http://www.gnu.org/licenses/>.
 *
 * @author Mark Denihan
 */
public class EnableScoreboard extends HttpServlet {

  private static final long serialVersionUID = 1L;
  private static final Logger log = LogManager.getLogger(EnableScoreboard.class);

  /**
   * @param classId The identifier of the class to add the players to
   * @param csrfToken
   */
  public void doPost(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    // Setting IpAddress To Log and taking header for original IP if forwarded from
    // proxy
    ShepherdLogManager.setRequestIp(request.getRemoteAddr(), request.getHeader("X-Forwarded-For"));
    log.debug("*** servlets.Admin.EnableScoreboard ***");
    PrintWriter out = response.getWriter();
    out.print(getServletInfo());
    HttpSession ses = request.getSession(true);
    Cookie tokenCookie = Validate.getToken(request.getCookies());
    Object tokenParmeter = request.getParameter("csrfToken");
    if (Validate.validateAdminSession(ses, tokenCookie, tokenParmeter)) {
      ShepherdLogManager.setRequestIp(
          request.getRemoteAddr(),
          request.getHeader("X-Forwarded-For"),
          ses.getAttribute("userName").toString());
      String htmlOutput = new String();
      if (Validate.validateTokens(tokenCookie, tokenParmeter)) {
        log.debug("Scoreboard being enabled by: " + ses.getAttribute("userName"));
        String[] classInfo = new String[2];
        try {
          String applicationRoot = getServletContext().getRealPath("");

          log.debug("Getting Parameters");
          String classId = (String) request.getParameter("classId");
          log.debug("classId = " + classId);
          String scoreboardMessage = new String();
          if (classId
              .isEmpty()) // Null Submitted - configure scoreboard to list all players regardless of
          // class
          {
            log.debug("Null Class submitted");

            log.debug("Unpacking restricted scoreboard value");
            String restrictedScoreboard =
                Validate.validateParameter(request.getParameter("restricted"), 5);

            if (restrictedScoreboard.isEmpty()) {

              ScoreboardStatus.setScoreboardOpen();
              scoreboardMessage =
                  "Scoreboard is now enabled and lists all users regardless of their class.";
            } else {
              log.debug("Restricted scoreboard value found");

              boolean isAdminOnly = restrictedScoreboard.equals("true");

              if (!isAdminOnly) {
                // Scoreboard is public
                ScoreboardStatus.setScoreboardPublic();
                log.debug("Public Scoreboard Enabled");
                scoreboardMessage = "Scoreboard is now enabled for public view.";

                htmlOutput =
                    "<h3 class='title'>Scoreboard Settings Updated</h3>"
                        + "<p>"
                        + scoreboardMessage
                        + " The scoreboard is public</p>";
              } else {
                // Scoreboard is admin only
                ScoreboardStatus.setScoreboardPublic();
                log.debug("Admin only scoreboard set");
                scoreboardMessage = "Scoreboard is only enabled for administrators.";

                htmlOutput =
                    "<h3 class='title'>Scoreboard Settings Updated</h3>"
                        + "<p>"
                        + scoreboardMessage
                        + " The scoreboard is admin only</p>";
              }
            }

          } else if (classId.equalsIgnoreCase("classSpecific")) {
            // Set Class Specific Scoreboards

            ScoreboardStatus.setScoreboardClassSpecific();
            scoreboardMessage =
                "Scoreboard has been enabled and only lists users from the viewer's class. Admin"
                    + " users will still see the scoreboard of the default class.";
            log.debug(scoreboardMessage);

          } else {
            // validate class identifier
            classInfo = Getter.getClassInfo(applicationRoot, classId);
            if (classInfo != null && !classInfo[0].isEmpty()) // Class Exists
            {
              log.debug("Valid Class Submitted, setting scoreboard class to " + classId);
              ScoreboardStatus.setScoreboardClass(classId);
              scoreboardMessage =
                  "Scoreboard has been enabled and only lists users from "
                      + Encode.forHtml(classInfo[0]);
            }
          }
          if (scoreboardMessage.isEmpty()) {
            log.debug("Scoreboard settings unchanged");

            htmlOutput =
                "<h3 class='title'>Scoreboard Settings are Unchanged</h3>"
                    + "<p>Invalid data was submitted. Please try again.</p>";
          } else // Function must have completed if this isn't empty
          {
            log.debug(scoreboardMessage);
            String restrictedScoreboard =
                Validate.validateParameter(request.getParameter("restricted"), 5);

            boolean isAdminOnly = restrictedScoreboard.equals("true");

            if (restrictedScoreboard.equals("false")
                && classId.equalsIgnoreCase("classSpecific")) // Total
            // Public
            // Scoreboard
            {
              log.debug("User Accessible Scoreboard Enabled");
              htmlOutput =
                  "<h3 class='title'>Scoreboard Settings Updated</h3>"
                      + "<p>"
                      + scoreboardMessage
                      + "</p>";
            } else {
              if (!classId.equalsIgnoreCase("classSpecific") && isAdminOnly) {
                ScoreboardStatus.setScoreboardAdminOnly();
                log.debug("Admin Only Scoreboard Enabled");
                htmlOutput =
                    "<h3 class='title'>Scoreboard Settings Updated</h3>"
                        + "<p>"
                        + scoreboardMessage
                        + " The scoreboard is only accessible by administrators</p>";
              } else if (!classId.equalsIgnoreCase("classSpecific") && isAdminOnly) {
                ScoreboardStatus.setScoreboardPublic();
                log.debug("Public Scoreboard Enabled");
                htmlOutput =
                    "<h3 class='title'>Scoreboard Settings Updated</h3>"
                        + "<p>"
                        + scoreboardMessage
                        + " The scoreboard is public</p>";
              } else // Not an Admin Only Board. Give response
              {
                htmlOutput =
                    "<h3 class='title'>Scoreboard Settings Updated</h3>"
                        + "<p>"
                        + scoreboardMessage
                        + "</p>";
              }
            }
          }
          out.write(htmlOutput);
        } catch (Exception e) {
          log.error("SetDefaultClass Error: " + e.toString());
          out.print(
              "<h3 class=\"title\">Scoreboard Configuration Failure</h3><br>"
                  + "<p>"
                  + "<font color=\"red\">An error Occurred! Please try again.</font>"
                  + "<p>");
        }
      } else {
        log.debug("CSRF Tokens did not match");
        out.print(
            "<h3 class=\"title\">Scoreboard Configuration Failure</h3><br>"
                + "<p>"
                + "<font color=\"red\">An error Occurred! Please try again.</font>"
                + "<p>");
      }
    } else {
      out.print(
          "<h3 class=\"title\">Failure</h3><br><p><font color=\"red\">An error Occurred! Please try"
              + " non administrator functions!</font><p>");
    }
    log.debug("*** EnableScoreboard END ***");
  }
}
